Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

California

Precipitation Rankings, September 1900

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1900
1-Month 		0.27"
(6.86mm)		 0.45"
(11.43mm)		 -0.18"
(-4.57mm)		 58th Driest
Driest since:
 1974
71st Wettest
Wettest since:
 1918
Ties: 1906, 1961, 1984, 1996
Aug–Sep 1900
2-Month 		0.35"
(8.89mm)		 0.69"
(17.53mm)		 -0.34"
(-8.64mm)		 36th Driest
Driest since:
 1937, 2018
93rd Wettest
Wettest since:
 1983
Ties: 1899, 1953, 2001
Jul–Sep 1900
3-Month 		0.56"
(14.22mm)		 0.87"
(22.10mm)		 -0.31"
(-7.88mm)		 42nd Driest
Driest since:
 1928
87th Wettest
Wettest since:
 1976
Jun–Sep 1900
4-Month 		0.88"
(22.35mm)		 1.22"
(30.99mm)		 -0.34"
(-8.64mm)		 40th Driest
Driest to Date
 2002
89th Wettest
Wettest since:
 1982
Ties: 1944, 1946
May–Sep 1900
5-Month 		2.41"
(61.21mm)		 2.10"
(53.34mm)		 0.31"
(7.87mm)		 87th Driest
Driest since:
 1924
42nd Wettest
Wettest since:
 1998
Apr–Sep 1900
6-Month 		4.52"
(114.81mm)		 3.74"
(95.00mm)		 0.78"
(19.81mm)		 98th Driest
Driest since:
 1924
31st Wettest
Wettest since:
 1896
Ties: 1990
Mar–Sep 1900
7-Month 		6.79"
(172.47mm)		 6.95"
(176.53mm)		 -0.16"
(-4.06mm)		 76th Driest
Driest since:
 2008
53rd Wettest
Wettest since:
 1995
Feb–Sep 1900
8-Month 		8.12"
(206.25mm)		 10.80"
(274.32mm)		 -2.68"
(-68.07mm)		 40th Driest
Driest since:
 2021
89th Wettest
Wettest since:
 1998
Jan–Sep 1900
9-Month 		10.94"
(277.88mm)		 15.05"
(382.27mm)		 -4.11"
(-104.39mm)		 34th Driest
Driest since:
 2022
95th Wettest
Wettest since:
 1998
Dec 1899–Sep 1900
10-Month 		14.51"
(368.55mm)		 18.67"
(474.22mm)		 -4.16"
(-105.67mm)		 36th Driest
Driest since:
 1924
92nd Wettest
Wettest since:
 1983
Nov 1899–Sep 1900
11-Month 		18.66"
(473.96mm)		 21.25"
(539.75mm)		 -2.59"
(-65.79mm)		 57th Driest
Driest since:
 1924
71st Wettest
Wettest since:
 1983
Oct 1899–Sep 1900
12-Month 		22.12"
(561.85mm)		 22.45"
(570.23mm)		 -0.33"
(-8.38mm)		 69th Driest
Driest since:
 1924
59th Wettest
Wettest since:
 1983
Apr 1899–Sep 1900
18-Month 		24.72"
(627.89mm)		 26.19"
(665.23mm)		 -1.47"
(-37.34mm)		 62nd Driest
Driest since:
 2021
66th Wettest
Wettest since:
 1983
Oct 1898–Sep 1900
24-Month 		39.25"
(996.95mm)		 44.90"
(1,140.46mm)		 -5.65"
(-143.51mm)		 38th Driest
Driest since:
 1977
89th Wettest
Wettest since:
 1983
Oct 1897–Sep 1900
36-Month 		54.41"
(1,382.01mm)		 67.32"
(1,709.93mm)		 -12.91"
(-327.92mm)		 21st Driest
Driest to Date
 2022
105th Wettest
Wettest since:
 1984
Oct 1896–Sep 1900
48-Month 		79.58"
(2,021.33mm)		 89.51"
(2,273.55mm)		 -9.93"
(-252.22mm)		 34th Driest
Driest to Date
 2015
91st Wettest
Wettest since:
 1998
Oct 1895–Sep 1900
60-Month 		104.31"
(2,649.47mm)		 111.69"
(2,836.93mm)		 -7.38"
(-187.46mm)		 49th Driest
Driest to Date
 1991
75th Wettest
Wettest to Date
 1999

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